diff options
| author | Maciej Fijalkowski <[email protected]> | 2019-02-01 21:42:23 +0000 |
|---|---|---|
| committer | Daniel Borkmann <[email protected]> | 2019-02-01 22:37:50 +0000 |
| commit | f3cea32d56e96c510af454616104e3979f7626dd (patch) | |
| tree | c533d2064965a7f1071d14b53105e591cbb24867 /tools/lib/bpf/libbpf.h | |
| parent | bpf: powerpc64: add JIT support for bpf line info (diff) | |
| download | kernel-f3cea32d56e96c510af454616104e3979f7626dd.tar.gz kernel-f3cea32d56e96c510af454616104e3979f7626dd.zip | |
libbpf: Add a helper for retrieving a map fd for a given name
XDP samples are mostly cooperating with eBPF maps through their file
descriptors. In case of a eBPF program that contains multiple maps it
might be tiresome to iterate through them and call bpf_map__fd for each
one. Add a helper mostly based on bpf_object__find_map_by_name, but
instead of returning the struct bpf_map pointer, return map fd.
Suggested-by: Jakub Kicinski <[email protected]>
Signed-off-by: Maciej Fijalkowski <[email protected]>
Reviewed-by: Jakub Kicinski <[email protected]>
Acked-by: John Fastabend <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Diffstat (limited to 'tools/lib/bpf/libbpf.h')
| -rw-r--r-- | tools/lib/bpf/libbpf.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 62ae6cb93da1..931be6f3408c 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -264,6 +264,9 @@ struct bpf_map; LIBBPF_API struct bpf_map * bpf_object__find_map_by_name(struct bpf_object *obj, const char *name); +LIBBPF_API int +bpf_object__find_map_fd_by_name(struct bpf_object *obj, const char *name); + /* * Get bpf_map through the offset of corresponding struct bpf_map_def * in the BPF object file. |